How does gene therapy affect a cell? a. cells with functioning genes are replaced with mutated genes. b. cells with defective genes are replaced with cells of normal genes. c. cells with normal genes are replaced with cells of defective genes. d. cells with abnormal genes are replaced with cells of destructive genes.

Ry was studying two populations of the same species of lizards. one population lived on an island and the other lived on the mainland. both populations were affected by a hurricane that hit the island and the mainland with equal force. a year later, henry was testing the gene frequency and saw a decrease in genetic variation in the island species, but not in the mainland species. which best describes a conclusion he might have reached? gene flow greatly affects small populations, but large populations can recover. genetic drift greatly affects small populations, but large populations can recover. gene flow greatly affects large populations, but small populations can recover. genetic drift greatly affects large populations, but small populations can recover.

If a young male's body is just beginning the process of producing sperm, when is it likely that he would ejaculate mature, viable sperm"

Amino acids with hydrophobic r groups are most often found buried in the interior of folded proteins.true or false.